CCP 09-16-2002 - Laserfiche WebLink

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Although useful, these findings needed to be supplemented with more detailed land use and transportation analysis before subregional strate- gies could be developed. The second year of the study was structured to fill that need. Land use data were refined, two growth scenarios were detailed to the next level of specificity, and a subarea travel demand model was developed to analyze transportation impacts at the subregional and local scales as well as the regional. This report summarizes the land use and transportation analysis, find- ings, conclusions and recommended next steps. These conclusions and recommendations will be blended with findings from the housing demo- graphics analysis to structure a framework for action, which will bring the subregional growth study to completion. land Use and Transportation Analysis The land use and transportation component of the buildout study was designed to investigate the impacts of different growth scenarios on the transportation system and the subregional relationship between land use and travel patterns. The Coalition study, which focused on public transit and the minor arterial network, was coordinated with a study of regional network impacts, which was funded by the Minnesota Department of Transportation. A subarea travel demand model compared two subregional growth sce- narios for 2020. The subarea model, which runs inside the Twin Cities regional model, contains enhancements which refine the zone structure (84 TAZs were subdivided into 371 subTAZs), improve sensitivity param- eters to better represent activity inside mixed-use centers, and add local roadway network detail. The following indicators were used to assess the impacts of each growth scenario on the transportation system: . trip generation . mode choice (auto, transit, walk) . average trip length . vehicle miles traveled (VMT) There were two runs of the model (see diagram on the opposite page). The first run assumed only those transportation system modifications stated in current policy documents of the Metropolitan Council and the Minnesota Department of Transportation. The second run used a modi- fied Coalition growth scenario (2.5a) and two variations of the transpor- tation system: 2.5b-more roadway network than current policy documents indicate; and 2.Sc-the additional roadway network added for 2.5b plus enhanced transit service. Results from these runs were compared and used to develop recommended next steps. 2 e . .